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Dear mhscott, Thanks for your kind attention. I put pushover analysis in a loop but got irrational results. The following is my pushover algorithm: set Fj5 [expr 5000*$N]; set Fj4 [expr 4000*$N]; set Fj3 [expr 3000*$N]; set Fj2 [expr 2000*$N]; set Fj1 [expr 1000*$N]; set Dmax [expr 0.05*$LBuilding ]...

Actually, I just can calculate the period at the beginning and at the end of pushover analysis. Would you please help me how to calculate the period at each step during the pushover analysis?

Dear Michael,
Thanks for kind consideration. Yes, I have defined nodal mass. I just want to know how to calculate the step to step period during pushover analysis.

Dear Vesna, How can I calculate the moment to moment period in a pushover analysis? I tried the procedure mentioned above but I could not obtain the periods. The following is my pushover algorithm: set Fj5 [expr 5000*$N]; set Fj4 [expr 4000*$N]; set Fj3 [expr 3000*$N]; set Fj2 [expr 2000*$N]; set Fj...

Dear Silvia I need to determine period at each step of pushover analysis. I just can calculate the period at the beginning and at the end of pushover analysis. Would you please help me how to calculate the period at each step during the pushover analysis? I use the following algorithm for determinin...

Thanks.
I will try it.

Hi

How can I calculate the amount of absorbed energy in a member(beam or column) in a 2Dframe?

Thanks.

Hi
As I told,I use nonlinearBeamColumn element for pushover analysis and actually distributed plasticity.

now,How can I find location of the plastic hinges and their maximum rotations ?

Hi
As I told,I use nonlinearBeamColumn element for pushover analysis and actually distributed plasticity.

now,How can I find location of the plastic hinges and their maximum rotations ?

Thanks a lot.
You are really kind to everybody.

you mean like this:

recorder Element -file ele1local.out -time -ele 1 plasticDeformation;

And

recorder Element -file ele1local.out -time -ele 1 chordDeformation;
?

the output has four columns:

what are the second,third and forth columns?

Please,
can anyone help me?
I dont have much time.

Hi
How can I calculate plastic rotation at the two ends of a beam-column element?

and how can I calculate elastic rotation at the two ends of a beam-column element?

I am using nonlinearBeamColumn elements.

Is there any recorder element?

Hi,

How can I calculate plastic rotation of a node?